The results showed that the HPT expression level in the plants of Bt transgenic rice ranged from 15.67 to 60.12 ng/gFW during the whole growth,and its content in the flour of the Bt-rice was 5.28 ng/gFW.

• 结果表明；不同生育期转Bt基因水稻植株中HPT蛋白的表达量约为15.；67~60